Protein Target Calculator

Reading The Result

The main number is a daily protein target in grams. It is based on body weight in kilograms and the selected grams-per-kilogram target. A 75 kg adult using a 1.2 g/kg/day planning target comes out at 90 g protein per day. The per-meal number then divides the day across the number of meals or protein occasions you entered, so four occasions would be about 22.5 g each.

The result is not a rule that every meal must hit exactly. It is a planning number. Some people prefer a higher-protein breakfast and a lighter evening meal; others use a protein-rich lunch after training. What matters for this calculator is the daily total, the range you meant to select and whether the plan fits your usual food, budget, appetite and any medical advice you have been given.

The serving estimate is deliberately plain. If you enter 25 g as a typical protein serving and the daily target is 90 g, the calculator reports 3.6 servings per day. In practice, that might be three main protein portions plus a yoghurt, a shake, beans on toast, eggs or another smaller protein source. It is not saying you must eat protein powder or count every gram.

Formula And Target Choices

The UK reference style target in this calculator uses 0.75 g of protein per kilogram of body weight per day for an average adult. That is a broad public-health reference, not a sports prescription. Many active people use higher planning ranges, and sports nutrition statements often discuss targets above 1.0 g/kg/day for training blocks. This page provides selectable planning values rather than promising one perfect target.

If you pick a higher target, the result should still be checked against ordinary meals. A very high daily target can crowd out fruit, vegetables, wholegrains, calcium-rich foods or fibre if it is chased with narrow food choices. A lower target may be perfectly suitable for a person who is not training hard, eats a varied diet and has no special clinical target.

Meal Split Examples

Protein grams are not the same as food weight. A 150 g cooked chicken breast, a tin of tuna, a bowl of Greek-style yoghurt, a tofu portion or a lentil dish all contain different amounts of protein. The calculator therefore estimates protein grams, while your shopping list still needs food labels, recipe data or a nutrition database.

Common Food Portion Guide

The values below are rounded examples for planning. Actual labels vary by brand, drained weight, cooking method and recipe. Plant foods can be excellent protein sources, but the protein per portion may be lower than a concentrated animal-food portion, so the meal design may need pulses, grains, nuts, seeds or soya foods working together.

When Not To Use A Standard Protein Target

Do not use this calculator as your only guide if you have chronic kidney disease, a kidney transplant, advanced liver disease, a fluid restriction, a prescribed renal diet, an active eating disorder, a history of disordered eating or a medically supervised weight-loss plan. In those cases, protein can be part of a wider clinical diet and should be planned with a dietitian, GP or specialist team.

Children and teenagers also need age, growth and development considered. A simple adult g/kg target can be too blunt for a young person. Pregnancy and breastfeeding can change protein needs, but they also change energy, iron, iodine, folate and other nutrition priorities. If a midwife, GP or dietitian has given a specific target, use that professional advice over this calculator.

For athletes, the calculation can be a useful starting point but not a full sports nutrition plan. Training load, energy intake, timing around sessions, recovery, body composition goals, injury status and competition schedule can all matter. A higher protein target will not compensate for too little total energy, poor sleep or an unbalanced diet.

Protein Target Table By Body Weight